The recruitment industry has already seen a large proportion of jobs advertising go online, but Zubka takes things a step further. It allows people to recommend their friends and associates into new jobs, and gives them a slice of the action along the way.

The company charges far less than a traditional recruitment agency, and gives back around 80% of the fee to the person who puts forward the winning candidate – turning every user of the site into a potential headhunter. Finders can scoop thousands of pounds per referral, and there are currently more than £1m of rewards available on the site at any given time.

With a small team and clear ways to make money it's tipped as the eBay of jobs, and founders David Shieldhouse and Armando Ruffini have a track record in building and selling new businesses.